topfeatures.fcm() was deprecated but still used in "Construct a FCM" tutorial

[paskn]

See the subj. Discovered this after updating my teaching materials. Starting from line

tutorials.quanteda.io/content/basic-operations/fcm/fcm.markdown

Line 62 in 1deb9ea

```r

the code in the tutorial should not work.

Error:
! `topfeatures.fcm()` was deprecated in quanteda 4.0 and is now defunct.

What would be the new way to get the top 50 features as in the linked tutorial? I tried Kenneth's topfeatures.fcm from quanteda/quanteda#2141 (the top message), and it works but the method is not sensitive to changes in n parameter. It always returns 10 items for some reason.

Thanks!

sessionInfo()

sessionInfo()
R version 4.4.2 (2024-10-31)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.1.1

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRblas.0.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: Europe/Berlin
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] quanteda.textstats_0.97.2 quanteda.corpora_0.9.2   
[3] quanteda.textplots_0.94.4 quanteda_4.1.0           

loaded via a namespace (and not attached):
 [1] Matrix_1.7-1         gtable_0.3.5         jsonlite_1.8.8      
 [4] dplyr_1.1.4          compiler_4.4.2       stopwords_2.3       
 [7] tidyselect_1.2.1     Rcpp_1.0.13-1        nsyllable_1.0.1     
[10] scales_1.3.0         yaml_2.3.8           fastmap_1.2.0       
[13] coda_0.19-4.1        lattice_0.22-6       ggplot2_3.5.1       
[16] R6_2.5.1             generics_0.1.3       knitr_1.47          
[19] htmlwidgets_1.6.4    ggrepel_0.9.5        tibble_3.2.1        
[22] statnet.common_4.9.0 munsell_0.5.1        pillar_1.9.0        
[25] rlang_1.1.4          utf8_1.2.4           fastmatch_1.1-4     
[28] stringi_1.8.4        lexicon_1.2.1        xfun_0.45           
[31] cli_3.6.2            withr_3.0.0          magrittr_2.0.3      
[34] network_1.18.2       digest_0.6.37        grid_4.4.2          
[37] lifecycle_1.0.4      vctrs_0.6.5          syuzhet_1.0.7       
[40] sna_2.7-2            data.table_1.15.4    evaluate_0.24.0     
[43] glue_1.7.0           farver_2.1.2         fansi_1.0.6         
[46] colorspace_2.1-0     rmarkdown_2.27       tools_4.4.2         
[49] pkgconfig_2.0.3      htmltools_0.5.8.1